Operating Instructions
Table Of Contents
- Table of contents
- 1 For your safety
- 2 Product description and method of operation
- 3 Mounting
- 4 Electrical connection
- 5 Startup
- 6 Function test
- 7 Service and maintenance
- 8 LED status indicators and switching states
- 9 Application examples
- 10 Technical data and ordering data
- A Technical appendix
- B Revision history
- Please observe the following notes
- How to contact us
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PHOENIX CONTACT 108366_en_01
1.4.2 Electrical safety
Electrical connection Electrical connection may only be carried out by qualified personnel.
PELV power supply All electrical connections have to be insulated from the mains using suitable measures.
• Observe the requirements according to EN 60204-1, Section 6.4.
• Use safety transformers according to IEC 61558-2-6 with limitation of the output voltage
in the event of an error.
• Another option is to use an equivalent insulation measure according to PELV require-
ments.
• Use the same power source for all devices that are electrically connected to the safety
switch.
Ground contact • Use the same ground contact for all devices that are electrically connected to the safety
switch.
Fuse protection for power
supply
• Protect the power supply with a suitable external fuse.
See Section “Fuse protection for the power supply” on page 34.
Protective circuit in the
case of inductive loads
All electrical outputs require an adequate protective circuit in the case of inductive loads.
• Protect the outputs with a freewheeling diode.
• Implement the protective circuit in parallel to the load.
• Do not use RC suppressors.
Sources of interference
from power devices
Power devices may represent a major source of interference.
• Remove the input and output circuits for signal processing locally from these sources
of interference.
• Ensure the cable installation of the safety circuits is as far away as possible from the
lines of the power circuits.
EMC interference For avoiding EMC interference:
• Ensure that the physical ambient and operating conditions at the installation location
meet the requirements of EN 60204-1, Section 4.4.2.
• Observe possible fields of interference for devices like frequency converters or induc-
tion heating systems. Observe the manufacturer's information.
ESD information
WARNING: Loss of safety function/hazardous shock currents
Incorrect installation can result in the loss of the safety function as well as hazardous
shock currents. Depending on the application, there may be serious risks for the user.
• Observe the notes on electrical safety.
• Observe the warning instructions provided elsewhere in this document.
• Plan the devices used and their installation in the system according to the specific
requirements.
• Recheck plants and systems retrofitted with the safety switch.
NOTE: Electrostatic discharge
Electrostatic discharge can damage or destroy the components. When handling the
device, observe the necessary safety precautions against electrostatic discharge (ESD)
according to EN 61340-5-1 and IEC 61340-5-1.